Pub Date : 2023-08-04DOI: 10.1515/mammalia-2022-0138
Janeira Liseth Rosero-Taramuel, I. Y. Mejía-Fontecha, Alexandra Marín-Ramírez, Valentina Marín-Giraldo, H. Ramírez-Chaves
Abstract In Colombia, 217 bat species have been recorded of which at least 22 species occur in Andean and sub-Andean ecosystems. To evaluate the richness of bats in an Andean elevational range at the Municipality of Manizales, Central Andes of Colombia, we performed surveys supplemented with incidental captures from 2018 to 2022 at different urban and peri-urban areas, and reviewed specimens in biological collections. We evaluated the perception and knowledge that local people have about bats using an online survey. We reported 33 species in the study area. Phyllostomidae showed the highest richness (20 species), followed by Vespertilionidae (11 species), and Molossidae (2 species). For the survey, we obtained responses from 219 people who showed a good knowledge about bats and their ecological importance. We did not find significant differences between ages and levels of schooling in the perception about bats. Our results highlight the relevance of conserving the green areas of Manizales and the need for environmental education programs to reduce possible bat-human conflicts and negative perceptions. Manizales has the potential as an Area of Importance for the Conservation of Bats, due to its high bat richness and that reproduction is occurring within the study area.
{"title":"Urban and peri-urban bats (Mammalia: Chiroptera) in Manizales, Colombia: exploring a conservation area in sub-Andean and Andean ecosystems","authors":"Janeira Liseth Rosero-Taramuel, I. Y. Mejía-Fontecha, Alexandra Marín-Ramírez, Valentina Marín-Giraldo, H. Ramírez-Chaves","doi":"10.1515/mammalia-2022-0138","DOIUrl":"https://doi.org/10.1515/mammalia-2022-0138","url":null,"abstract":"Abstract In Colombia, 217 bat species have been recorded of which at least 22 species occur in Andean and sub-Andean ecosystems. To evaluate the richness of bats in an Andean elevational range at the Municipality of Manizales, Central Andes of Colombia, we performed surveys supplemented with incidental captures from 2018 to 2022 at different urban and peri-urban areas, and reviewed specimens in biological collections. We evaluated the perception and knowledge that local people have about bats using an online survey. We reported 33 species in the study area. Phyllostomidae showed the highest richness (20 species), followed by Vespertilionidae (11 species), and Molossidae (2 species). For the survey, we obtained responses from 219 people who showed a good knowledge about bats and their ecological importance. We did not find significant differences between ages and levels of schooling in the perception about bats. Our results highlight the relevance of conserving the green areas of Manizales and the need for environmental education programs to reduce possible bat-human conflicts and negative perceptions. Manizales has the potential as an Area of Importance for the Conservation of Bats, due to its high bat richness and that reproduction is occurring within the study area.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86165251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-03DOI: 10.1515/mammalia-2023-0014
José Manuel Vilchis-Conde, S. M. Ospina-Garcés, Carolina Ureta, Fernando A. Cervantes, L. Guevara
Abstract The small-eared shrews Cryptotis mexicanus and Cryptotis obscurus (Eulipotyphla, Soricidae) are two closely related taxa from the northern Neotropics whose taxonomy is still unresolved. Here, we tested the hypothesis of three lineages (Northern, Central, and Southern) within this pair of semifossorial shrews. We photographed skulls, dentaries, and humeri from 226 museum specimens and used geometric morphometrics to evaluate sexual dimorphism, differences between lineages, and the effect of the environment on the shape of the structures. We found negligible differences between males and females, supporting previous studies of classical morphometrics in this genus. Our results also support the differentiation of semifossorial shrews into the three geographically isolated groups, where the size of the dentary and the shape of the three examined structures contribute to discrimination. We found a significant sign of the influence of the environment on the shape of the dentary but not on the skull or the humerus. We suggest that geographic isolation across climatically similar regions has contributed to the differentiation between lineages. We propose recognizing all three lineages as valid species that must be adequately described.
{"title":"Geometric morphometrics clarifies the taxonomic status of semifossorial shrews (Eulipotyphla, Soricidae, Cryptotis) from Mexican cloud forests","authors":"José Manuel Vilchis-Conde, S. M. Ospina-Garcés, Carolina Ureta, Fernando A. Cervantes, L. Guevara","doi":"10.1515/mammalia-2023-0014","DOIUrl":"https://doi.org/10.1515/mammalia-2023-0014","url":null,"abstract":"Abstract The small-eared shrews Cryptotis mexicanus and Cryptotis obscurus (Eulipotyphla, Soricidae) are two closely related taxa from the northern Neotropics whose taxonomy is still unresolved. Here, we tested the hypothesis of three lineages (Northern, Central, and Southern) within this pair of semifossorial shrews. We photographed skulls, dentaries, and humeri from 226 museum specimens and used geometric morphometrics to evaluate sexual dimorphism, differences between lineages, and the effect of the environment on the shape of the structures. We found negligible differences between males and females, supporting previous studies of classical morphometrics in this genus. Our results also support the differentiation of semifossorial shrews into the three geographically isolated groups, where the size of the dentary and the shape of the three examined structures contribute to discrimination. We found a significant sign of the influence of the environment on the shape of the dentary but not on the skull or the humerus. We suggest that geographic isolation across climatically similar regions has contributed to the differentiation between lineages. We propose recognizing all three lineages as valid species that must be adequately described.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81450003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-03DOI: 10.1515/mammalia-2023-0018
L. Lafond, B. Darby, J. Boulanger, Kathryn A. Yurkonis
Abstract While many studies have characterized small mammals of the southern and central Great Plains (USA), far fewer have documented small mammals of the northern Great Plains which differ dramatically in plant structure and composition. We examined the presence and distribution of small mammals captured at a salinity-affected grassland in northeastern North Dakota (2018–2021). We captured 12 species from 8 genera including Microtus pennsylvanicus (n = 724), Peromyscus (maniculatus) sonoriensis (n = 114), Sorex cinereus (n = 54), and Zapus hudsonius (n = 43). We evaluated the extent to which these species varied with plant and environmental characteristics. M. pennsylvanicus was positively associated with plant cover and soil moisture and P. (maniculatus) sonoriensis was positively associated with forb cover and negatively associated with litter and elevation. Z. hudsonius was negatively associated with forb cover and soil moisture and S. cinereus was positively associated with cover and negatively associated with salinity. These species associated with their environments differently than their more southern counterparts and reinforce the notion that not all areas, even in relatively intact grasslands, are available to all species. Future studies are needed to further examine more infrequently captured species, including a Sorex hoyi, an Onychomys leucogaster, and eight Myodes gapperi in this region.
{"title":"Small mammals of a northern salt-affected grassland","authors":"L. Lafond, B. Darby, J. Boulanger, Kathryn A. Yurkonis","doi":"10.1515/mammalia-2023-0018","DOIUrl":"https://doi.org/10.1515/mammalia-2023-0018","url":null,"abstract":"Abstract While many studies have characterized small mammals of the southern and central Great Plains (USA), far fewer have documented small mammals of the northern Great Plains which differ dramatically in plant structure and composition. We examined the presence and distribution of small mammals captured at a salinity-affected grassland in northeastern North Dakota (2018–2021). We captured 12 species from 8 genera including Microtus pennsylvanicus (n = 724), Peromyscus (maniculatus) sonoriensis (n = 114), Sorex cinereus (n = 54), and Zapus hudsonius (n = 43). We evaluated the extent to which these species varied with plant and environmental characteristics. M. pennsylvanicus was positively associated with plant cover and soil moisture and P. (maniculatus) sonoriensis was positively associated with forb cover and negatively associated with litter and elevation. Z. hudsonius was negatively associated with forb cover and soil moisture and S. cinereus was positively associated with cover and negatively associated with salinity. These species associated with their environments differently than their more southern counterparts and reinforce the notion that not all areas, even in relatively intact grasslands, are available to all species. Future studies are needed to further examine more infrequently captured species, including a Sorex hoyi, an Onychomys leucogaster, and eight Myodes gapperi in this region.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79416260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-03DOI: 10.1515/mammalia-2022-0129
Karen Rojas-Herrera, F. Villalobos, Antonio Guillén-Servent, S. Solari, Octavio R. Rojas-Soto
Abstract Lasiurus is a bat genus recognised to have migratory species. However, little is known about the seasonal distribution for most of its species. We used spatial analysis of occurrence records and ecological niche modeling to evaluate the seasonal distributions of five species: Lasiurus borealis, Lasiurus frantzii, Lasiurus ega, Lasiurus xanthinus, and Lasiurus intermedius, to disentangle their seasonal distribution patterns. L. intermedius, L. xanthinus, and L. frantzii presented distinct seasonal patterns in the rate of occurrence records in different areas, which accumulate most records in the northern populations in summer. For L. borealis, we found seasonal variation throughout its entire distribution, with most records in summer and a progressive decline towards winter. In contrast, L. ega showed no seasonal changes in any region. In species with seasonal changes in their occurrences records, the projections of summer conditions did not predict their preferred winter conditions, suggesting these species occupy different ecological niches seasonally. We found seasonality in the northern areas of these species’ distributions, although we could not distinguish whether migration movements or torpor behaviors are the underlying cause. Conversely, we suggest that most central and southern populations of the five species do not exhibit seasonality and are year-round residents.
{"title":"Seasonal distribution analysis of five lasiurine bat species: clues to migration patterns and behavior","authors":"Karen Rojas-Herrera, F. Villalobos, Antonio Guillén-Servent, S. Solari, Octavio R. Rojas-Soto","doi":"10.1515/mammalia-2022-0129","DOIUrl":"https://doi.org/10.1515/mammalia-2022-0129","url":null,"abstract":"Abstract Lasiurus is a bat genus recognised to have migratory species. However, little is known about the seasonal distribution for most of its species. We used spatial analysis of occurrence records and ecological niche modeling to evaluate the seasonal distributions of five species: Lasiurus borealis, Lasiurus frantzii, Lasiurus ega, Lasiurus xanthinus, and Lasiurus intermedius, to disentangle their seasonal distribution patterns. L. intermedius, L. xanthinus, and L. frantzii presented distinct seasonal patterns in the rate of occurrence records in different areas, which accumulate most records in the northern populations in summer. For L. borealis, we found seasonal variation throughout its entire distribution, with most records in summer and a progressive decline towards winter. In contrast, L. ega showed no seasonal changes in any region. In species with seasonal changes in their occurrences records, the projections of summer conditions did not predict their preferred winter conditions, suggesting these species occupy different ecological niches seasonally. We found seasonality in the northern areas of these species’ distributions, although we could not distinguish whether migration movements or torpor behaviors are the underlying cause. Conversely, we suggest that most central and southern populations of the five species do not exhibit seasonality and are year-round residents.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84262780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-01DOI: 10.1515/mammalia-2023-0041
Kim Anna Cornelia Hordijk, Sam Pottie, J. Ayala
Abstract Very little is known on Ctenomys pilarensis, as it has rarely been studied. We conducted a preliminary study on its burrow use by implementing a capture-mark-recapture method. Between February and June 2022, 12 different Pilar tuco-tucos were captured and chipped using MiniHPT8 PIT tags, 7 individuals were recaptured at least once. Our results indicate this species to be solitary, as we found no evidence of burrow sharing. These findings should, however, be viewed with caution due to our small sample size.
{"title":"A preliminary examination of burrow use of the understudied Ctenomys pilarensis in Ñeembucú, Paraguay","authors":"Kim Anna Cornelia Hordijk, Sam Pottie, J. Ayala","doi":"10.1515/mammalia-2023-0041","DOIUrl":"https://doi.org/10.1515/mammalia-2023-0041","url":null,"abstract":"Abstract Very little is known on Ctenomys pilarensis, as it has rarely been studied. We conducted a preliminary study on its burrow use by implementing a capture-mark-recapture method. Between February and June 2022, 12 different Pilar tuco-tucos were captured and chipped using MiniHPT8 PIT tags, 7 individuals were recaptured at least once. Our results indicate this species to be solitary, as we found no evidence of burrow sharing. These findings should, however, be viewed with caution due to our small sample size.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80913390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-31DOI: 10.1515/mammalia-2023-0033
J. C. Cepeda-Duque, Eduven Arango-Correa, Gabriel P. Andrade-Ponce, Luis Mazariegos, T. Hofmeester, H. Ramírez-Chaves
Abstract Recently, the Mostela system emerged as an expansion of camera trapping to gain new insights into the assemblages of small-sized and cryptic mammals. Despite being an established technique to study the natural history and ecology of rodents, shrews and small carnivores in Europe, its potential in tropical areas remains unexplored. We present the results of a pilot hybrid survey with conventional trail cameras and Mostelas conducted in a private protected area situated in the Cordillera Occidental of Colombia. We installed eight Mostelas paired with an external trail camera 550 m apart from each other from May to October 2022 in the Mesenia-Paramillo Nature Reserve. The Mostelas recorded two species of small carnivores, the threatened and unknown Colombian weasel (Neogale felipei), and the Long-tailed weasel (Neogale frenata), including several small rodents and marsupials. Mostelas captured a larger proportion of small non-volant mammals that could at least be identified to genus level compared to conventional trail cameras. We found that using baits inside Mostelas yielded a greater number of detections and richness compared to surveys not using them. Finally, we encourage the use of this hybrid system to improve the monitoring of poorly known small non-volant mammals in the Andean cloud forests.
{"title":"Expanding the frontiers of camera-trapping in Colombia: application of the “Mostela” system to gain knowledge on small non-volant mammals from an Andean cloud forest","authors":"J. C. Cepeda-Duque, Eduven Arango-Correa, Gabriel P. Andrade-Ponce, Luis Mazariegos, T. Hofmeester, H. Ramírez-Chaves","doi":"10.1515/mammalia-2023-0033","DOIUrl":"https://doi.org/10.1515/mammalia-2023-0033","url":null,"abstract":"Abstract Recently, the Mostela system emerged as an expansion of camera trapping to gain new insights into the assemblages of small-sized and cryptic mammals. Despite being an established technique to study the natural history and ecology of rodents, shrews and small carnivores in Europe, its potential in tropical areas remains unexplored. We present the results of a pilot hybrid survey with conventional trail cameras and Mostelas conducted in a private protected area situated in the Cordillera Occidental of Colombia. We installed eight Mostelas paired with an external trail camera 550 m apart from each other from May to October 2022 in the Mesenia-Paramillo Nature Reserve. The Mostelas recorded two species of small carnivores, the threatened and unknown Colombian weasel (Neogale felipei), and the Long-tailed weasel (Neogale frenata), including several small rodents and marsupials. Mostelas captured a larger proportion of small non-volant mammals that could at least be identified to genus level compared to conventional trail cameras. We found that using baits inside Mostelas yielded a greater number of detections and richness compared to surveys not using them. Finally, we encourage the use of this hybrid system to improve the monitoring of poorly known small non-volant mammals in the Andean cloud forests.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78023868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-27DOI: 10.1515/mammalia-2023-0026
O. Tolkachev, Kirill Maklakov
Abstract Longworth live traps are widely used for trapping mouse-sized rodents and shrews. However, they have a number of disadvantages: some have a manufacturing defect, resulting in reduced sensitivity; smaller species of shrews can pass under the treadle, avoiding capture; captured animals can gnaw specific parts of the sidewalls and decrease the durability of the traps. To increase the efficiency of catching small shrews, we added a movable tin ramp to the treadle of the Longworth live traps and used washers to improve the design. To repair and protect traps damaged by captured animals, we used tin patches. The modified traps were shown to be significantly better than the original traps in catching small shrew species (Sorex caecutiens Laxmann 1788, Sorex minutus Linnaeus, 1766). Tin patches reliably protected live traps from further damages by animals and do not affect their catching efficiency.
{"title":"Modifications of Longworth traps to prevent wear and improve catchability of shrews (Sorex spp.)","authors":"O. Tolkachev, Kirill Maklakov","doi":"10.1515/mammalia-2023-0026","DOIUrl":"https://doi.org/10.1515/mammalia-2023-0026","url":null,"abstract":"Abstract Longworth live traps are widely used for trapping mouse-sized rodents and shrews. However, they have a number of disadvantages: some have a manufacturing defect, resulting in reduced sensitivity; smaller species of shrews can pass under the treadle, avoiding capture; captured animals can gnaw specific parts of the sidewalls and decrease the durability of the traps. To increase the efficiency of catching small shrews, we added a movable tin ramp to the treadle of the Longworth live traps and used washers to improve the design. To repair and protect traps damaged by captured animals, we used tin patches. The modified traps were shown to be significantly better than the original traps in catching small shrew species (Sorex caecutiens Laxmann 1788, Sorex minutus Linnaeus, 1766). Tin patches reliably protected live traps from further damages by animals and do not affect their catching efficiency.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87525838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-25DOI: 10.1515/mammalia-2023-0031
Claus Thomas, Venance Msoffe, N. Van Houtte, G. Mhamphi, J. Mariën, C. Sabuni, Isaac Makundi, J. Nzalawahe, Robert R. Machang’u, H. Leirs
Abstract Rodents play an important role in the transmission of zoonotic diseases. This study investigated the prevalence of Leptospira spp. and Bartonella spp. in Mastomys natalensis and its ectoparasites (fleas and mites) in selected villages of Morogoro, Tanzania. Mastomys natalensis were captured live in fallow habitats using Sherman® traps and anesthetized using Halothane. Blood samples were obtained from the retroorbital sinus Ectoparasites were removed from the fur using a hard brush and preserved in 70 % ethanol. Real time–qPCR was used to detect Leptospira spp. and Bartonella spp. from Mastomys natalensis blood and ectoparasites respectively. The study revealed a relatively larger number of males than females captures. Leptospira spp. was demonstrated in one out of 100 Mastomys natalensis. For Bartonella spp., prevalence of (14 %) was recorded in mites with a higher proportion in mites from adult male Mastomys natalensis than females. Upon Sanger sequencing, four positive samples showed a complete sequence of the ITS gene. Indicating that all samples belonged to Uncultured Bartonella. Low prevalence of Leptospira spp. and a high prevalence of Bartonella spp. was observed in Mastomys natalensis. Further exploration of rodent pathogens is recommended to raise awareness of the role of commensal rodents in disease transmission via their ectoparasites.
{"title":"Molecular detection of Leptospira and Bartonella in Mastomys natalensis and its ectoparasites in Morogoro, Tanzania","authors":"Claus Thomas, Venance Msoffe, N. Van Houtte, G. Mhamphi, J. Mariën, C. Sabuni, Isaac Makundi, J. Nzalawahe, Robert R. Machang’u, H. Leirs","doi":"10.1515/mammalia-2023-0031","DOIUrl":"https://doi.org/10.1515/mammalia-2023-0031","url":null,"abstract":"Abstract Rodents play an important role in the transmission of zoonotic diseases. This study investigated the prevalence of Leptospira spp. and Bartonella spp. in Mastomys natalensis and its ectoparasites (fleas and mites) in selected villages of Morogoro, Tanzania. Mastomys natalensis were captured live in fallow habitats using Sherman® traps and anesthetized using Halothane. Blood samples were obtained from the retroorbital sinus Ectoparasites were removed from the fur using a hard brush and preserved in 70 % ethanol. Real time–qPCR was used to detect Leptospira spp. and Bartonella spp. from Mastomys natalensis blood and ectoparasites respectively. The study revealed a relatively larger number of males than females captures. Leptospira spp. was demonstrated in one out of 100 Mastomys natalensis. For Bartonella spp., prevalence of (14 %) was recorded in mites with a higher proportion in mites from adult male Mastomys natalensis than females. Upon Sanger sequencing, four positive samples showed a complete sequence of the ITS gene. Indicating that all samples belonged to Uncultured Bartonella. Low prevalence of Leptospira spp. and a high prevalence of Bartonella spp. was observed in Mastomys natalensis. Further exploration of rodent pathogens is recommended to raise awareness of the role of commensal rodents in disease transmission via their ectoparasites.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72534992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-07DOI: 10.1515/mammalia-2022-0110
M. Guichón, V. Benitez, A. Gozzi, S. Doyle, G. Cassini
Abstract Tree squirrel species that are successful invaders may modify their behaviour according to the characteristics of the invaded community. We studied the use of space by Callosciurus erythraeus in the main invasion focus established in Argentina, where suitable habitat is highly fragmented and immersed in a rural–urban landscape of the Pampas region. We evaluated habitat use in relation to the dominant arboreal vegetation (evergreen vs. deciduous) based on seasonal trapping data throughout two years and home range size and overlap based on seasonal radio-tracking data in two consecutive years. We captured 476 squirrels with a higher trapping success in areas dominated by evergreen vegetation. Effective home ranges were smaller for females (0.10–0.77 ha, n = 12) than for males (0.9–3.78 ha, n = 3). We observed home range overlap between and within both sexes, suggesting no or low territoriality. Our results support the two working hypotheses on the relatively higher use of areas dominated by evergreen vegetation and on the relatively small home range sizes and large overlapping areas associated to high squirrel density. The flexibility in the use of different type of arboreal patches would be another attribute linked to the invasion success of this species.
作为成功入侵物种的树松鼠会根据被入侵群落的特点改变其行为。我们研究了红胼胝体对阿根廷主要入侵焦点的空间利用，在那里，适合的栖息地是高度破碎的，沉浸在潘帕斯地区的城乡景观中。基于两年的季节性捕获数据和连续两年的季节性无线电跟踪数据，我们评估了栖息地利用与优势乔木植被(常绿与落叶)的关系。我们在常绿植被为主的地区捕获了476只松鼠，捕获成功率较高。雌性的有效范围(0.10-0.77 ha, n = 12)小于雄性(0.9-3.78 ha, n = 3)。我们观察到两性之间和两性之间的范围重叠，表明没有或低领土性。我们的研究结果支持了两种假设，即松鼠对常绿植被占主导地位的区域的利用相对较高，以及松鼠密度较高的相对较小的活动范围和较大的重叠区域。在使用不同类型的树木斑块方面的灵活性将是与该物种入侵成功相关的另一个属性。
{"title":"Space use by Callosciurus erythraeus in a fragmented landscape","authors":"M. Guichón, V. Benitez, A. Gozzi, S. Doyle, G. Cassini","doi":"10.1515/mammalia-2022-0110","DOIUrl":"https://doi.org/10.1515/mammalia-2022-0110","url":null,"abstract":"Abstract Tree squirrel species that are successful invaders may modify their behaviour according to the characteristics of the invaded community. We studied the use of space by Callosciurus erythraeus in the main invasion focus established in Argentina, where suitable habitat is highly fragmented and immersed in a rural–urban landscape of the Pampas region. We evaluated habitat use in relation to the dominant arboreal vegetation (evergreen vs. deciduous) based on seasonal trapping data throughout two years and home range size and overlap based on seasonal radio-tracking data in two consecutive years. We captured 476 squirrels with a higher trapping success in areas dominated by evergreen vegetation. Effective home ranges were smaller for females (0.10–0.77 ha, n = 12) than for males (0.9–3.78 ha, n = 3). We observed home range overlap between and within both sexes, suggesting no or low territoriality. Our results support the two working hypotheses on the relatively higher use of areas dominated by evergreen vegetation and on the relatively small home range sizes and large overlapping areas associated to high squirrel density. The flexibility in the use of different type of arboreal patches would be another attribute linked to the invasion success of this species.","PeriodicalId":49892,"journal":{"name":"Mammalia","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80668035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：